)]}'
{
  "log": [
    {
      "commit": "e6a1530d692d6a60cdf15dfbcfea07f5324d7b9f",
      "tree": "bb34a4d745eb7f7e8d3de40b171fac17822ee8ac",
      "parents": [
        "7b2259b3e53f128c10a9fded0965e69d4a949847"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Sun Jun 25 05:46:49 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Jun 25 10:00:55 2006 -0700"
      },
      "message": "[PATCH] Allow migration of mlocked pages\n\nHugh clarified the role of VM_LOCKED.  So we can now implement page\nmigration for mlocked pages.\n\nAllow the migration of mlocked pages.  This means that try_to_unmap must\nunmap mlocked pages in the migration case.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "7b2259b3e53f128c10a9fded0965e69d4a949847",
      "tree": "c1827144c22dd49775190e05de791531e9fd21fd",
      "parents": [
        "68402ddc677005ed1b1359bbc1f279548cfc0928"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Sun Jun 25 05:46:48 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Sun Jun 25 10:00:55 2006 -0700"
      },
      "message": "[PATCH] page migration: Support a vma migration function\n\nHooks for calling vma specific migration functions\n\nWith this patch a vma may define a vma-\u003evm_ops-\u003emigrate function.  That\nfunction may perform page migration on its own (some vmas may not contain page\nstructs and therefore cannot be handled by regular page migration.  Pages in a\nvma may require special preparatory treatment before migration is possible\netc) .  Only mmap_sem is held when the migration function is called.  The\nmigrate() function gets passed two sets of nodemasks describing the source and\nthe target of the migration.  The flags parameter either contains\n\nMPOL_MF_MOVE\twhich means that only pages used exclusively by\n\t\tthe specified mm should be moved\n\nor\n\nMPOL_MF_MOVE_ALL which means that pages shared with other processes\n\t\tshould also be moved.\n\nThe migration function returns 0 on success or an error condition.  An error\ncondition will prevent regular page migration from occurring.\n\nOn its own this patch cannot be included since there are no users for this\nfunctionality.  But it seems that the uncached allocator will need this\nfunctionality at some point.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "86c3a7645c05a7d06b72653aa4b2bea4e7229d1b",
      "tree": "ac68280e9c44dbc6ca4c88dc1e9c72a8f56be95e",
      "parents": [
        "35601547baf92d984b6e59cf3583649da04baea5"
      ],
      "author": {
        "name": "David Quigley",
        "email": "dpquigl@tycho.nsa.gov",
        "time": "Fri Jun 23 02:04:02 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:54 2006 -0700"
      },
      "message": "[PATCH] SELinux: add security_task_movememory calls to mm code\n\nThis patch inserts security_task_movememory hook calls into memory management\ncode to enable security modules to mediate this operation between tasks.\n\nSince the last posting, the hook has been renamed following feedback from\nChristoph Lameter.\n\nSigned-off-by: David Quigley \u003cdpquigl@tycho.nsa.gov\u003e\nAcked-by:  Stephen Smalley \u003csds@tycho.nsa.gov\u003e\nSigned-off-by: James Morris \u003cjmorris@namei.org\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nAcked-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nAcked-by: Chris Wright \u003cchrisw@sous-sol.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "742755a1d8ce2b548428f7aacf1758b4bba50080",
      "tree": "53426657e14dc19a694d418274c9a6f4dcb8a997",
      "parents": [
        "95a402c3847cc16f4ba03013cd01404fa0f14c2e"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:55 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] page migration: sys_move_pages(): support moving of individual pages\n\nmove_pages() is used to move individual pages of a process. The function can\nbe used to determine the location of pages and to move them onto the desired\nnode. move_pages() returns status information for each page.\n\nlong move_pages(pid, number_of_pages_to_move,\n\t\taddresses_of_pages[],\n\t\tnodes[] or NULL,\n\t\tstatus[],\n\t\tflags);\n\nThe addresses of pages is an array of void * pointing to the\npages to be moved.\n\nThe nodes array contains the node numbers that the pages should be moved\nto. If a NULL is passed instead of an array then no pages are moved but\nthe status array is updated. The status request may be used to determine\nthe page state before issuing another move_pages() to move pages.\n\nThe status array will contain the state of all individual page migration\nattempts when the function terminates. The status array is only valid if\nmove_pages() completed successfullly.\n\nPossible page states in status[]:\n\n0..MAX_NUMNODES\tThe page is now on the indicated node.\n\n-ENOENT\t\tPage is not present\n\n-EACCES\t\tPage is mapped by multiple processes and can only\n\t\tbe moved if MPOL_MF_MOVE_ALL is specified.\n\n-EPERM\t\tThe page has been mlocked by a process/driver and\n\t\tcannot be moved.\n\n-EBUSY\t\tPage is busy and cannot be moved. Try again later.\n\n-EFAULT\t\tInvalid address (no VMA or zero page).\n\n-ENOMEM\t\tUnable to allocate memory on target node.\n\n-EIO\t\tUnable to write back page. The page must be written\n\t\tback in order to move it since the page is dirty and the\n\t\tfilesystem does not provide a migration function that\n\t\twould allow the moving of dirty pages.\n\n-EINVAL\t\tA dirty page cannot be moved. The filesystem does not provide\n\t\ta migration function and has no ability to write back pages.\n\nThe flags parameter indicates what types of pages to move:\n\nMPOL_MF_MOVE\tMove pages that are only mapped by the process.\n\nMPOL_MF_MOVE_ALL Also move pages that are mapped by multiple processes.\n\t\tRequires sufficient capabilities.\n\nPossible return codes from move_pages()\n\n-ENOENT\t\tNo pages found that would require moving. All pages\n\t\tare either already on the target node, not present, had an\n\t\tinvalid address or could not be moved because they were\n\t\tmapped by multiple processes.\n\n-EINVAL\t\tFlags other than MPOL_MF_MOVE(_ALL) specified or an attempt\n\t\tto migrate pages in a kernel thread.\n\n-EPERM\t\tMPOL_MF_MOVE_ALL specified without sufficient priviledges.\n\t\tor an attempt to move a process belonging to another user.\n\n-EACCES\t\tOne of the target nodes is not allowed by the current cpuset.\n\n-ENODEV\t\tOne of the target nodes is not online.\n\n-ESRCH\t\tProcess does not exist.\n\n-E2BIG\t\tToo many pages to move.\n\n-ENOMEM\t\tNot enough memory to allocate control array.\n\n-EFAULT\t\tParameters could not be accessed.\n\nA test program for move_pages() may be found with the patches\non ftp.kernel.org:/pub/linux/kernel/people/christoph/pmig/patches-2.6.17-rc4-mm3\n\nFrom: Christoph Lameter \u003cclameter@sgi.com\u003e\n\n  Detailed results for sys_move_pages()\n\n  Pass a pointer to an integer to get_new_page() that may be used to\n  indicate where the completion status of a migration operation should be\n  placed.  This allows sys_move_pags() to report back exactly what happened to\n  each page.\n\n  Wish there would be a better way to do this. Looks a bit hacky.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "95a402c3847cc16f4ba03013cd01404fa0f14c2e",
      "tree": "0fd9b3379f70cc99b2325bccaa150089abf6c8b3",
      "parents": [
        "aaa994b300a172afafab47938804836b923e5ef7"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:53 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] page migration: use allocator function for migrate_pages()\n\nInstead of passing a list of new pages, pass a function to allocate a new\npage.  This allows the correct placement of MPOL_INTERLEAVE pages during page\nmigration.  It also further simplifies the callers of migrate pages.\nmigrate_pages() becomes similar to migrate_pages_to() so drop\nmigrate_pages_to().  The batching of new page allocations becomes unnecessary.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "aaa994b300a172afafab47938804836b923e5ef7",
      "tree": "ccc1acf72e9d1dfbd25fa5f8e067a195f93b0319",
      "parents": [
        "e24f0b8f76cc3dd96f36f5b6a9f020f6c3fce198"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:52 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:53 2006 -0700"
      },
      "message": "[PATCH] page migration: handle freeing of pages in migrate_pages()\n\nDo not leave pages on the lists passed to migrate_pages().  Seems that we will\nnot need any postprocessing of pages.  This will simplify the handling of\npages by the callers of migrate_pages().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e24f0b8f76cc3dd96f36f5b6a9f020f6c3fce198",
      "tree": "2c6ca6f0385d3d36135855f77a0474188cf33842",
      "parents": [
        "8f9de51a4a98ba32f839903b7d009788bc2c295d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:51 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:52 2006 -0700"
      },
      "message": "[PATCH] page migration: simplify migrate_pages()\n\nCurrently migrate_pages() is mess with lots of goto.  Extract two functions\nfrom migrate_pages() and get rid of the gotos.\n\nPlus we can just unconditionally set the locked bit on the new page since we\nare the only one holding a reference.  Locking is to stop others from\naccessing the page once we establish references to the new page.\n\nRemove the list_del from move_to_lru in order to have finer control over list\nprocessing.\n\n[akpm@osdl.org: add debug check]\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nCc: Hugh Dickins \u003chugh@veritas.com\u003e\nCc: Jes Sorensen \u003cjes@trained-monkey.org\u003e\nCc: KAMEZAWA Hiroyuki \u003ckamezawa.hiroyu@jp.fujitsu.com\u003e\nCc: Lee Schermerhorn \u003clee.schermerhorn@hp.com\u003e\nCc: Andi Kleen \u003cak@muc.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "04e62a29bf157ce1edd168f2b71b533c80d13628",
      "tree": "7f0d5a58eeef2c2e08da86dc7141a1ccd050a37d",
      "parents": [
        "442c9137de8d769053e81d325709dca72f0b5e44"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:38 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:51 2006 -0700"
      },
      "message": "[PATCH] More page migration: use migration entries for file pages\n\nThis implements the use of migration entries to preserve ptes of file backed\npages during migration.  Processes can therefore be migrated back and forth\nwithout loosing their connection to pagecache pages.\n\nNote that we implement the migration entries only for linear mappings.\nNonlinear mappings still require the unmapping of the ptes for migration.\n\nAnd another writepage() ugliness shows up.  writepage() can drop the page\nlock.  Therefore we have to remove migration ptes before calling writepages()\nin order to avoid having migration entries point to unlocked pages.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "442c9137de8d769053e81d325709dca72f0b5e44",
      "tree": "200e5ace0310755d88dd1c7597cc0bb540264fe1",
      "parents": [
        "6c5240ae7f48c83fcaa8e24fa63e7eb09aba5651"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:38 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:51 2006 -0700"
      },
      "message": "[PATCH] More page migration: do not inc/dec rss counters\n\nIf we install a migration entry then the rss not really decreases since the\npage is just moved somewhere else.  We can save ourselves the work of\ndecrementing and later incrementing which will just eventually cause cacheline\nbouncing.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "6c5240ae7f48c83fcaa8e24fa63e7eb09aba5651",
      "tree": "fede2324f4348701e60758d7f894aae4b09cdc9a",
      "parents": [
        "d75a0fcda2cfc71b50e16dc89e0c32c57d427e85"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:37 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] Swapless page migration: modify core logic\n\nUse the migration entries for page migration\n\nThis modifies the migration code to use the new migration entries.  It now\nbecomes possible to migrate anonymous pages without having to add a swap\nentry.\n\nWe add a couple of new functions to replace migration entries with the proper\nptes.\n\nWe cannot take the tree_lock for migrating anonymous pages anymore.  However,\nwe know that we hold the only remaining reference to the page when the page\ncount reaches 1.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "d75a0fcda2cfc71b50e16dc89e0c32c57d427e85",
      "tree": "cc9dda0a0e53e62c859bf7fcafe7b9c9f6de2352",
      "parents": [
        "0697212a411c1dae03c27845f2de2f3adb32c331"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:36 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] Swapless page migration: rip out swap based logic\n\nRip the page migration logic out.\n\nRemove all code that has to do with swapping during page migration.\n\nThis also guts the ability to migrate pages to swap.  No one used that so lets\nlet it go for good.\n\nPage migration should be a bit broken after this patch.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "0697212a411c1dae03c27845f2de2f3adb32c331",
      "tree": "4bedcdb27522f4a42c422e0a8af155501f43a69c",
      "parents": [
        "8351a6e4785218a2b03c142be92926baff95ba5c"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:35 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] Swapless page migration: add R/W migration entries\n\nImplement read/write migration ptes\n\nWe take the upper two swapfiles for the two types of migration ptes and define\na series of macros in swapops.h.\n\nThe VM is modified to handle the migration entries.  migration entries can\nonly be encountered when the page they are pointing to is locked.  This limits\nthe number of places one has to fix.  We also check in copy_pte_range and in\nmprotect_pte_range() for migration ptes.\n\nWe check for migration ptes in do_swap_cache and call a function that will\nthen wait on the page lock.  This allows us to effectively stop all accesses\nto apge.\n\nMigration entries are created by try_to_unmap if called for migration and\nremoved by local functions in migrate.c\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n  Several times while testing swapless page migration (I\u0027ve no NUMA, just\n  hacking it up to migrate recklessly while running load), I\u0027ve hit the\n  BUG_ON(!PageLocked(p)) in migration_entry_to_page.\n\n  This comes from an orphaned migration entry, unrelated to the current\n  correctly locked migration, but hit by remove_anon_migration_ptes as it\n  checks an address in each vma of the anon_vma list.\n\n  Such an orphan may be left behind if an earlier migration raced with fork:\n  copy_one_pte can duplicate a migration entry from parent to child, after\n  remove_anon_migration_ptes has checked the child vma, but before it has\n  removed it from the parent vma.  (If the process were later to fault on this\n  orphaned entry, it would hit the same BUG from migration_entry_wait.)\n\n  This could be fixed by locking anon_vma in copy_one_pte, but we\u0027d rather\n  not.  There\u0027s no such problem with file pages, because vma_prio_tree_add\n  adds child vma after parent vma, and the page table locking at each end is\n  enough to serialize.  Follow that example with anon_vma: add new vmas to the\n  tail instead of the head.\n\n  (There\u0027s no corresponding problem when inserting migration entries,\n  because a missed pte will leave the page count and mapcount high, which is\n  allowed for.  And there\u0027s no corresponding problem when migrating via swap,\n  because a leftover swap entry will be correctly faulted.  But the swapless\n  method has no refcounting of its entries.)\n\nFrom: Ingo Molnar \u003cmingo@elte.hu\u003e\n\n  pte_unmap_unlock() takes the pte pointer as an argument.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n  Several times while testing swapless page migration, gcc has tried to exec\n  a pointer instead of a string: smells like COW mappings are not being\n  properly write-protected on fork.\n\n  The protection in copy_one_pte looks very convincing, until at last you\n  realize that the second arg to make_migration_entry is a boolean \"write\",\n  and SWP_MIGRATION_READ is 30.\n\n  Anyway, it\u0027s better done like in change_pte_range, using\n  is_write_migration_entry and make_migration_entry_read.\n\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\n\n  Remove unnecessary obfuscation from sys_swapon\u0027s range check on swap type,\n  which blew up causing memory corruption once swapless migration made\n  MAX_SWAPFILES no longer 2 ^ MAX_SWAPFILES_SHIFT.\n\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nAcked-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nFrom: Hugh Dickins \u003chugh@veritas.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "8351a6e4785218a2b03c142be92926baff95ba5c",
      "tree": "479fe6bcecb38ddc2c34ec812d82e432a79d0dfa",
      "parents": [
        "2d1db3b1170db4e8bf0531dd636742269c2cf579"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:33 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: move fallback handling into special function\n\nMove the fallback code into a new fallback function and make the function\nbehave like any other migration function.  This requires retaking the lock if\npageout() drops it.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "2d1db3b1170db4e8bf0531dd636742269c2cf579",
      "tree": "1161ed614a55869c278234d7472673fd1a577887",
      "parents": [
        "c3fcf8a5daacf350f0632e1379414c01f34eeea3"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:33 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: pass \"mapping\" to migration functions\n\nChange handling of address spaces.\n\nPass a pointer to the address space in which the page is migrated to all\nmigration function.  This avoids repeatedly having to retrieve the address\nspace pointer from the page and checking it for validity.  The old page\nmapping will change once migration has gone to a certain step, so it is less\nconfusing to have the pointer always available.\n\nMove the setting of the mapping and index for the new page into\nmigrate_pages().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "c3fcf8a5daacf350f0632e1379414c01f34eeea3",
      "tree": "ec7a4cd5d7a2b60ec4539479bb5b24c46b5cf72f",
      "parents": [
        "5b5c7120e2154239837fad5e3c7b7b781092b19c"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:32 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: extract try_to_unmap from migration functions\n\nExtract try_to_unmap and rename remove_references -\u003e move_mapping\n\ntry_to_unmap() may significantly change the page state by for example setting\nthe dirty bit.  It is therefore best to unmap in migrate_pages() before\ncalling any migration functions.\n\nmigrate_page_remove_references() will then only move the new page in place of\nthe old page in the mapping.  Rename the function to\nmigrate_page_move_mapping().\n\nThis allows us to get rid of the special unmapping for the fallback path.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "5b5c7120e2154239837fad5e3c7b7b781092b19c",
      "tree": "733d5e4268a79abb320316d98c15b822f9f55a15",
      "parents": [
        "e7340f73307abed9283d0a07570d06e228c205dd"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:29 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: drop nr_refs in remove_references()\n\nDrop nr_refs parameter from migrate_page_remove_references()\n\nThe nr_refs parameter is not really useful since the number of remaining\nreferences is always\n\n1 for anonymous pages without a mapping\n2 for pages with a mapping\n3 for pages with a mapping and PagePrivate set.\n\nRemove the early check for the number of references since we are checking\npage_mapcount() earlier.  Ultimately only the refcount matters after the\ntree_lock has been obtained.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.coim\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e7340f73307abed9283d0a07570d06e228c205dd",
      "tree": "e786e2d09cfaf670128571029d833d1d27998d59",
      "parents": [
        "1d8b85ccf1ed53a71b092fb5d807edf1ea7dabdd"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:29 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: remove useless definitions\n\nRemove the export for migrate_page_remove_references() and migrate_page_copy()\nthat are unlikely to be used directly by filesystems implementing migration.\nThe export was useful when buffer_migrate_page() lived in fs/buffer.c but it\nhas now been moved to migrate.c in the migration reorg.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "1d8b85ccf1ed53a71b092fb5d807edf1ea7dabdd",
      "tree": "9742a9522a9834ee62dcfedc4c31fd76f4a2741e",
      "parents": [
        "7352349a19e84b28f10668eca9cbb6bbbfa9d38e"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Fri Jun 23 02:03:28 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Fri Jun 23 07:42:50 2006 -0700"
      },
      "message": "[PATCH] page migration cleanup: group functions\n\nReorder functions in migrate.c.  Group all migration functions for struct\naddress_space_operations together.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "4c28f81193b6778f7b49090930d88e6d12bcb928",
      "tree": "5e0d83368e7282060b8de5e73f13eb6003e99391",
      "parents": [
        "a4b741e380cb56045ccea36f2dbc10e42af21f24"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon May 01 12:16:08 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Mon May 01 18:17:45 2006 -0700"
      },
      "message": "[PATCH] page migration: Fix fallback behavior for dirty pages\n\nCurrently we check PageDirty() in order to make the decision to swap out\nthe page.  However, the dirty information may be only be contained in the\nptes pointing to the page.  We need to first unmap the ptes before checking\nfor PageDirty().  If unmap is successful then the page count of the page\nwill also be decreased so that pageout() works properly.\n\nThis is a fix necessary for 2.6.17.  Without this fix we may migrate dirty\npages for filesystems without migration functions.  Filesystems may keep\npointers to dirty pages.  Migration of dirty pages can result in the\nfilesystem keeping pointers to freed pages.\n\nUnmapping is currently not be separated out from removing all the\nreferences to a page and moving the mapping.  Therefore try_to_unmap will\nbe called again in migrate_page() if the writeout is successful.  However,\nit wont do anything since the ptes are already removed.\n\nThe coming updates to the page migration code will restructure the code\nso that this is no longer necessary.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "64a3ca5f7ec2606b03be4a65736164a5373732ed",
      "tree": "a65c1ee2eab32e0ad9571dc5553544ad36d74d77",
      "parents": [
        "91fc8ab3c6312931d64c72845ee2f93a0f87f1a5"
      ],
      "author": {
        "name": "Adrian Bunk",
        "email": "bunk@stusta.de",
        "time": "Mon Apr 10 22:53:03 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Apr 11 06:18:33 2006 -0700"
      },
      "message": "[PATCH] mm/migrate.c: don\u0027t export a static function\n\nEXPORT_SYMBOL\u0027ing of a static function is not a good idea.\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Christoph Lameter \u003cclameter@engr.sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "e23ca00bf1b1c6c0f04702cb4d29e275ab8dc330",
      "tree": "3cf690fc3305a9af03f42aa25808b713efb53c27",
      "parents": [
        "1e624196f43c3a62122959e15c5f03572cdadb5d"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Mon Apr 10 22:52:57 2006 -0700"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Tue Apr 11 06:18:32 2006 -0700"
      },
      "message": "[PATCH] Some page migration fixups\n\n- Remove sparse comment\n\n- Remove duplicated include\n\n- Return the correct error condition in migrate_page_remove_references().\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    },
    {
      "commit": "b20a35035f983f4ac7e29c4a68f30e43510007e0",
      "tree": "fdf090ddddbcc275349f62f71adc98649e2c683b",
      "parents": [
        "442295c94bf650221af3ef20fc68fa3e93876818"
      ],
      "author": {
        "name": "Christoph Lameter",
        "email": "clameter@sgi.com",
        "time": "Wed Mar 22 00:09:12 2006 -0800"
      },
      "committer": {
        "name": "Linus Torvalds",
        "email": "torvalds@g5.osdl.org",
        "time": "Wed Mar 22 07:54:06 2006 -0800"
      },
      "message": "[PATCH] page migration reorg\n\nCentralize the page migration functions in anticipation of additional\ntinkering.  Creates a new file mm/migrate.c\n\n1. Extract buffer_migrate_page() from fs/buffer.c\n\n2. Extract central migration code from vmscan.c\n\n3. Extract some components from mempolicy.c\n\n4. Export pageout() and remove_from_swap() from vmscan.c\n\n5. Make it possible to configure NUMA systems without page migration\n   and non-NUMA systems with page migration.\n\nI had to so some #ifdeffing in mempolicy.c that may need a cleanup.\n\nSigned-off-by: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n"
    }
  ]
}